Pocket-knife



(No Model.)

B. VON BLTZINGSLOWBN.

' POCKET- KNIFE@ Non. 515,743. Patented Mar. 6, 1894..

Q, TTOHNE Y.

W/TNESSES.'

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NITE rArEs PATENT @Enten BRUNO von RLTZINGSLWEN, or NEW YORK,Ass1eNOR,EYDIRECT AND MESNE ASSIGNMENTS, 'ro'rrIE AMERICAN AUTOMATIC KNIFE ANDNov-` EL-TY COMPANY, OE BROOKLYN, NEW YORK.

POCKET-KNIFE.

SPECIFICATION forming part of Letters Patent No. 515,743, dated March 6,1894.

Application filed February 25, 1893. Serial No. 463,726. (No model.)

To @ZZ whom t may concern,.-

"Be it known that l, BRUNO VON BLTZINGS- LOWEN, a subject of the Emperorof Germany, and a resident of New York, in the county of New York andState of New York, have invented certain new and useful Improvements 1nPocket-Knives, of which the following is a specification.

My invention has reference to improvelo ments in pocket-knives, and theinvention consists of a pocket-knife with a hollow handle in which theblade is inclosed in such a manner that, by a pressure upon a spring,the blade is released from a detaining device I5 and dropped out ot' thehandle and caught by a Jaw corresponding with a notch in the blade, sothat the knife can be handled for use; a separate bottom piece can beconveniently detached from the handle to have the latter zo cleaned.

` The special construction of my pocket-knife 1s more fully pointed outhereinafter and illustrated in the drawings, in which- Figures 1, 2, and3 are front views of my 2 5 improved pocket-knife, the knife-blade beingexposed for use in Fig. 3. Fig-4 is a vertical section on line Fig. 2.Figs. 5 and 6 are modications of the knife, one covering plate andtop-plate being removed in Figs. 2,

3o 3, 5, and 6. Figs. 2 and 5 are details. Fig. 7 is a horizontalsection on line y-y of Fig. Figs. 8 and 10 are further modilications ofthe handle, and Fig. 9 is a vertical section on line e-z Fig. 8.

Similar letters of reference indicate corresponding parts.

The main parts of my improved pocket# knife are the covering plates Dinclosing the knife-blade K which is provided with a notch 4o c, apivoted link B having a jaw h which catches the said notch in the bladewhen the latter is exposed for use, a spring j engaging by its pressurethe said link, a detachable bottom-piece Gr and a closing strap A.

In the construction shown in Figs. 2, 3, and 5 the bottom-piece Gr has aslit g into which the upwardly extending spring f is placed and reliablyattached lthereto. The said spring presses with its free end against the5o link B which is pivoted by means of a pivotpin fr to and between thecovering plates D. The hollow handle is closed at the bottom by thebottom piece, and at the longitudinal sides by the said bottom-piece,the spring and the pivoted link, and the closing-strap A respectively.The inclosed knifeblade K has in its tang a notch c, the lower shouldero of which extends beyond the back line of the blade proper, as shown inFigs. 2, 3, 5, and 6, so that the blade is somewhat narrower than thein- 6o ner space of the handle, and the tang exactly iits into the saidspace. When the knife is closed, the point-portion of the blade isdetained by an inwardly extending jaw b of the link B, which has thepurpose to engage the notch inthe blade when the latter is dropped outfor use. To prevent the link B from being pressed into the handle by theaction of the spring f, a transverse stop-pin e is fastened to thecovering plates D which pin is 7o in contact with the inner longitudinalface of the said link when the knife is closed. The portion of thepivoted link B which is engaged by the spring, terminates into a hook orknob d extending beyond the corresponding longitudinal side face of thehandle. A second transverse stop-pin d prevents the spring f from beingpressed too far into the handle. The bottom-piece G is kept in positionby a pin or screw d piercing the side- 8o strap A and projecting into acorresponding hole in the said bottom-piece.

In the construction shown in Figs. 5 and 5a the bottom-piece G has anupward extension g serving as a supportfor the spring f', and 8 5 astop-pin n that cornes in contact with the link B when a pressure isexerted upon the knob or hook d.

In Fig.'6 the spring is shown independent from the bottom piece G whichspring is fas- 9o tened to the coveringplates by a pin n2 that serves asa stop-device for the link B. The bottom-piece has a groove and isattached to the handle by means of a removable pin o piercing a closingside-strap g3 and project- 95 ing into the said groove in thebottom-piece.

In the construction shown in Figs. 8 and?) the closing bottom piece G isheld in its position by a spring t fastened in a groove u of the sameand provided with a push-pin k proroc jeoting into a corresponding holein one of the covering plates.

When the bottom-piece is to be removed from the handle the outwardlyextending projection t of the springr is pressed sidewise, the pin hreleased from the Corresponding covering plate and the bottom piecedrawn out of the handle.

In the construction shown in Fig. 10 the lower end of the springfhas anangular extension r"projeoting into a groove in the bot tom piece G andheld in position by a pin 'il' piercing through one `'covering plate anda top-plate S, if such topplates are used, and reaching into a hole inthe said extension i. Inthis construction atransverse pin 'i keeps thespring fin line with the corresponding longitudinal edges of thecovering plates.

`When it is desired to clean the hollow handle from dust, the bottompiece Gis detached from the covering plates b withdrawing the screw a orpin o or by pushing the springt sidewise, and the bottom piece thendrawn out. The inner space of the handle can then be convenientlycleaned.

When the knife is to be opened for use, the yhook or knob d is presseddown and the upper end of the pivoted link B thereby swung out, wherebythe pointed portion of the blade is released from the jaw of the saidlink, and the blade is then dropped out 'until the shoulvder c of thetang ofthe blade touches the said jaw. The hook or knob dis thenreleased from the pressure and the link removed into its former positionby the action of the spring f so that the jaw of the link cat-nhe's thenotch in the tang ot the blade as indicated in Fig. 3. The blade is thusreliably held in position.y When the knit'e is to be closed, thehook orknob is again pressed down, the notch in the tang of the blade releasedfrom the jaw and the blade then y dropped into the handle. Having thusdescribed my invention, I

claim as new and desire to secure by Letters BRUN() VON BL'IZINGSL WEN.

W itnesses:

ALFRED BERNHEIM, CHARLES KAR?.

